<template>
  <div class="login_continer">
    <div class="login_box">
      <!-- avater -->
      <div class="avatar_box">
        <img src="../assets/avatar.png" alt="" />
      </div>
      <!-- login form -->
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input show-password type="password" v-model="loginForm.password"
            prefix-icon="iconfont icon-3702mima" @keyup.enter.native="login">
          </el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">提交</el-button>
          <el-button type="info" @click="loginFormReset">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data: function () {
    return {
      // 表单数据绑定
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 表单验证规则对象
      loginFormRules: {
        username: [
          { required: true, message: '请输入用户名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入用户密码', trigger: 'blur' },
          { min: 6, max: 18, message: '长度在 6 到 18 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    loginFormReset: function () {
      this.$refs.loginFormRef.resetFields()
    },
    login: function () {
      this.$refs.loginFormRef.validate(async (valid, invalid) => {
        if (!valid) return
        let { data: result } = await this.$http.post('login', this.loginForm)
        // console.log(result)
        if (result.meta.status !== 200) return this.$message.error('用户名或密码不正确请重新登录')
        this.$message.success('登录成功')
        window.sessionStorage.setItem('token', result.data.token)
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_continer {
  height: 100%;
  background-color: #1f275a;
}

.login_box {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 10px #ddd;
}

.avatar_box {
  position: absolute;
  left: 50%;
  width: 130px;
  height: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  background-color: #fff;
  box-shadow: 0 0 10px #ddd;
  transform: translate(-50%, -50%);

  img {
    width: 100%;
    height: 100%;
    background-color: #eee;
    border-radius: 50%;
  }
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
